Documentation for the notify.telstra component (#1268)

* Documentation for the notify.telstra component

* Add ha_release property to notify.telstra documentation

source/_components/notify.telstra.markdown

@@ -0,0 +1,39 @@
+---
+layout: page
+title: "Telstra"
+description: "Instructions on how to add Telstra API notifications to Home Assistant."
+date: 2016-10-19 10:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: telstra.png
+ha_category: Notifications
+ha_release: 0.32
+---
+
+
+The `telstra` notification platform allows you to deliver Home Assistant notifications to Australian phone numbers over the [Telstra SMS API](https://dev.telstra.com/content/sms-api-0).
+
+To enable the Telstra notifications in your installation, you must first create an account and API app over at [dev.telstra.com](https://dev.telstra.com/). The free tier allows for 1000 notifications to be sent per month.
+
+After your API app is approved, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+notify:
+  name: NOTIFIER_NAME
+  platform: telstra
+  consumer_key: TELSTRA_API_CONSUMER_KEY_HERE
+  consumer_secret: TELSTRA_API_CONSUMER_SECRET_HERE
+  phone_number: SMS_RECIPIENT_PHONE_NUMBER_HERE
+```
+
+Configuration variables:
+
+- **name** (*Optional*): Setting the optional parameter `name` allows multiple notifiers to be created. The default value is `notify`. The notifier will bind to the service `notify.NOTIFIER_NAME`.
+- **consumer_key** (*Required*): The consumer key of your Telstra API app.
+- **consumer_secret** (*Required*): The consumer secret of your Telstra API app.
+- **phone_number** (*Required*): The phone number of where the notifications will be sent.
+
+To use notifications, please see the [getting started with automation page](/getting-started/automation/).